| Part Number(s) (NSID) |
Top View | Type | Pins | MSL Rating | Peak Reflow | RoHS Status |
CAD Symbols | Models | Package Marking Format |
|---|---|---|---|---|---|---|---|---|---|
| LM4809LDX/NOPB LM4809LDX |
 |
LLP | 8 | 3 1 |
260 235 |
Detail | Download | N/A |
XYTT G09 |
| LM4809LQ/NOPB LM4809LQ |
 |
LLP | 8 | 3 1 |
260 235 |
Detail | Download | N/A |
XTT GB3 |
| LM4809LQX/NOPB LM4809LQX |
|
LLP | 8 | 3 1 |
260 235 |
Detail | Download | N/A |
XTT GB3 |
| LM4809MM/NOPB LM4809MM |
 |
MINI SOIC | 8 | 1 1 |
260 260 |
Detail | Download | N/A |
ZXTT G09 |
| LM4809MMX/NOPB LM4809MMX |
|
MINI SOIC | 8 | 1 1 |
260 260 |
Detail | Download | N/A |
ZXTT G09 |
Description
The LM4809 is a dual audio power amplifier capable of delivering 105mW per channel of continuous average power into a 16
load with 0.1% (THD+N) from a 5V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. Since the LM4809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems.
The unity-gain stable LM4809 can be configured by external gain-setting resistors.
The LM4809 features an externally controlled, active-low, micropower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.
|
THD+N at 1kHz at 105mW continuous average power into 16 |
0.1% (typ) |
|
THD+N at 1kHz at 70mW continuous average power into 32 |
0.1% (typ) |
|
Shutdown Current |
0.4µA (typ) |
| • | Headphone Amplifier |
| • | Personal Computers |
| • | Microphone Preamplifier |
| • | PDA's |
| • | Active-low shutdown mode |
| • | "Click and Pop" reduction circuitry |
| • | Low shutdown current |
| • | LLP, MSOP, and SO surface mount packaging |
| • | No bootstrap capacitors required |
| • | Unity-gain stable |
Diagrams
Typical Application
|
Connection Diagram
 |
Typical Performance  |
